Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion

Minming Zhu (1) , Xunsi Wang (1) , Zhanghao Pan , Ci Cheng (1) , Qingde Zhu (1) , Chen Jiang (1) , Qiuhua Nie (1) , Peiqing Zhang (1) , Yuehao Wu , Shixun Dai (1) , Tiefeng Xu (1) , Guangming Tao (2) , Xianghua Zhang (3)

1 Laboratory of Infrared Material and Devices
2 CREOL - Center for Research and Education in Optics and Lasers
3 ISCR - Institut des Sciences Chimiques de Rennes

The theoretical analysis and experimental preparation of a hollow-core Bragg fiber based on chalcogenide glasses are demonstrated. The fiber has potential applications in bio-sensing and IR energy transmission. Two chalcogenide glasses with, respectively, high and low refractive indexes are investigated in detail for the fabrication of hollow-core Bragg fibers. The most appropriate structure is selected; this structure is composed of four concentric rings and a center air hole . Its band gap for the Bragg fiber is analyzed by the plane wave method. The chalcogenide glasses Ge15Sb20S58.5I13 and Ge15Sb10Se75 are chosen to extrude the robust multi-material glass preform with a specialized punch and glass container. The glass preform is simultaneously protected with a polyetherimide polymer. The hollow-core Bragg fibers are finally obtained after glass preform extrusion, fiber preform fabrication, and fiber drawing. Results showed that the fiber has a transparency window from 2.5 to 14 μm, including a low-loss transmission window from 10.5 to 12 μm. The location of this low-loss transmission window matches the predicted photonic band gap in the simulation

Keywords: Characterization and Evaluation of Materials; Condensed Matter Physics; Nanotechnology; Operating Procedures; Materials Treatment; Optical and Electronic Materials; Surfaces and Interfaces; Thin Films

Domains: Chemical Sciences

Minming Zhu, Xunsi Wang, Zhanghao Pan, Ci Cheng, Qingde Zhu, et al.. Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion. Applied physics. A, Materials science & processing, 2015, 119 (2), pp.455--460. ⟨10.1007/s00339-015-9017-3⟩. ⟨hal-01165430⟩